Best Answer: I'd say about 10-15 mins walking at a relatively average pace!! Fastest time to run a mile is around 4 minutes. The average time to walk a mile is 12 minutes, so half a mile would be 6 minutes. i walk a mile every morning in 15-20 minutes, so probably 10 minutes. At a semi rapid rate about 7 1/2 minutes.
Causes of Nose Burning Sensation: The following medical conditions are some of the possible causes of Nose Burning Sensation. There are likely to be other possible causes, so ask your doctor about your symptoms. Sunburn. Allergy to cream/lotion.
Nasal sprays and other allergy medications are very safe medications that have very few side effects. I can think of no reason that using these medications over the summer (months ago now) would somehow have damaged the inside of your nose in any way and led to this problem you are having now with a strange burning smell inside of the nose.